Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
The start of April signals an increase in the average high-temperature, moving from a frosty 43.7°F (6.5°C) in March to a refreshing 55.6°F (13.1°C). During the April nights, an average temperature of 38.8°F (3.8°C) is observed in Union.Humidity
In April, the average relative humidity in Union is 77%.Rainfall
In Union, in April, it is raining for 16.3 days, with typically 3.54" (90mm) of accumulated precipitation. Throughout the year, there are 154.6 rainfall days, and 30.31" (770mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Union. April is the last month it regularly snows in Union. During 2 snowfall days, in April, Union aggregates 1.81" (46mm) of snow. Throughout the year, there are 44.9 snowfall days, and 17.24" (438mm) of snow is accumulated.Daylight
In April, the average length of the day is 13h and 23min.On the first day of the month, sunrise is at 6:35 am and sunset at 7:20 pm. On the last day of April, sunrise is at 5:49 am and sunset at 7:52 pm CDT.
Sunshine
In Union, Illinois, the average sunshine in April is 7.4h.UV index
In Union, the average daily maximum UV index in April is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The daily high UV index of 3 in April translates into this advice:
Put precautions into practice - Protective measures against sun-induced damage are advised. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What is the usual temperature for Union in April?
What is the average humidity in April in Union?
How much does it rain in Union in April?
What is the last month it snows in Union?
How many hours of daylight does Union have in April?
What time are sunrise and sunset in April in Union?
How long on average sun shines in April in Union?
How high is the UV index in April in Union?
Average temperature in April
Union, IL
- Average high temperature in April: 55.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in April: 38.8°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in April
Union, IL
- Average pressure in April: 29.95"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Union, IL
- Average wind speed in April: 9.9mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in April
Union, IL
- Average humidity in April: 77%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall in April
Union, IL
- Average rainfall in April: 3.54"
The wettest month (with the highest rainfall) is June (4.21").
The driest months (with the least rainfall) are February and November (1.5").
Average rainfall days in April
Union, IL
- Average rainfall days in April: 16.3 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in April
Union, IL
- Average snowfall in April: 1.81"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Union, IL
- Average snowfall days in April: 2 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Union, IL
- Average daylight in April: 13h and 2min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in April
Union, IL
- Average sunshine days in April: 11.3 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.5 days).
Average UV index in April
Union, IL
- Average UV index in April: 3
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in April
Union, IL
- Average cloud cover in April: 51
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in April
Union, IL
- Average visibility in April: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Union, Illinois, USA
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